نتایج جستجو برای: line source

تعداد نتایج: 809307  

Journal: :Astronomische Nachrichten 2023

We present a 3-dimensional matched filtering approach for the blind search of faint emission-line sources in integral-field spectroscopic datasets. The filter is designed to account spectrally rapidly varying background noise due telluric air glow spectrum. A software implementation this implemented an updated version Line Source Detection Cataloguing tool (LSDCat2.0). Using public data from MU...

2008
M. Idemen A. Alkumru

The aim of the present paper is to reveal the effect of motion on the scattering by an edge. To this end one considers a canonical structure formed by a perfectly conducting half-plane illuminated by a time-harmonic and uniformly moving infinitely long line source. The relevant line source is located parallel to the edge and moves with a constant velocity which is also parallel to the half-plan...

Journal: :The Astrophysical Journal 2022

We report on the discovery of an absorption line at $E=8.56^{+0.05}_{-0.11}$ keV detected with a significance $>3.3\sigma$ in NuSTAR and XMM-Newton spectra newly discovered hyperluminous X-ray source (HLX, $L_{\rm X}>10^{41}$ ergs$^{-1}$) galaxy NGC 4045 distance 32 Mpc. The was first serendipitously Swift/XRT observation galaxy, Swift monitoring reveals highly variable changing by over order m...

2011
Blaise Faugeras Jacques Blum Cedric Boulbe

We describe an algorithm for the reconstruction of the equilibrium in a Tokamak from discrete magnetic measurements. In order to solve this inverse problem we first use toroidal harmonics to compute Cauchy boundary conditions on a fixed closed contour. Then we use these Cauchy boundary conditions to solve a non-linear source identification problem.

2006
W. Hussain

This paper is concerned with the diffraction of an electromagnetic wave by a perfectly conducting half-plane in a homogeneous bi-isotropic medium (asymptotically). Similar analysis in a source-free field is done in S. Asghar and A. Lakhtakia (1994), Planewave diffraction by a perfectly conducting half-plane in a homogeneous bi-isotropic medium. Int. J. Appl. Electromagnetics in materials, 5, (1...

2001
YEHUDA LEVIATAN ARLON T. ADAMS

The surface currents on a two-wire transmission line induced by incident field excitations are investigated using the spectral concept. A simple solution is obtained for plane wave excitation. A solution for voltage source excitation, in which the induced current may be given, at least approximately, by means of the so-called leaky-wave concept, is considered. The influence of the electrical di...

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